Philips TDA8703T-C4, TDA8702T-C2 Datasheet

DATA SH EET

Product specification
Supersedes data of April 1993
File under Integrated Circuits, IC02

1996 Aug 23

INTEGRATED CIRCUITS

TDA8702

8-bit video digital-to-analog
converter

1996 Aug 23 2

Philips Semiconductors Product specification

8-bit video digital-to-analog converter TDA8702

FEATURES

• 8-bit resolution

• Conversion rate up to 30 MHz

• TTL input levels

• Internal reference voltage generator

• Two complementary analog voltage outputs

• No deglitching circuit required

• Internal input register

• Low power dissipation

• Internal 75 Ω output load (connected to the analog

supply)

• Very few external components required.

APPLICATIONS

• High-speed digital-to-analog conversion

• Digital TV including:

– field progressive scan
– line progressive scan

• Subscriber TV decoders

• Satellite TV decoders

• Digital VCRs.

GENERAL DESCRIPTION

The TDA8702 is an 8-bit Digital-to-Analog Converter
(DAC) for video and other applications. It converts the
digital input signal into an analog voltage output at a
maximum conversion rate of 30 MHz. No external
reference voltage is required and all digital inputs are TTL
compatible.

QUICK REFERENCE DATA

Note

1. D0 to D7 connected to V

CCD

and CLK connected to DGND.

2. The analog output voltages (V

OUT

and V

OUT

) are negative with respect to V

CCA

(see Table 1). The output resistance

between V

CCA

and each of these outputs is typically 75 Ω.

3. The −3 dB analog output bandwidth is determined by real time analysis of the output transient at a maximum input
code transition (code 0 to 255).

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

V

CCA

analog supply voltage 4.5 5.0 5.5 V

V

CCD

digital supply voltage 4.5 5.0 5.5 V

I

CCA

analog supply current note 1 − 26 32 mA

I

CCD

digital supply current note 1 − 23 30 mA

V

OUT

− V

OUT

full-scale analog output voltage
(peak-to-peak value)

note 2
Z

L

=10kΩ−1.45 −1.60 −1.75 V

Z

L

=75kΩ−0.72 −0.80 −0.88 V
ILE DC integral linearity error −−±1/2 LSB
DLE DC differential linearity error −−±1/2 LSB
f

CLK

maximum conversion rate −−30 MHz

B −3 dB analog bandwidth f

CLK

= 30 MHz; note 3 − 150 − MHz

P

tot

total power dissipation − 250 340 mW

1996 Aug 23 3

Philips Semiconductors Product specification

8-bit video digital-to-analog converter TDA8702

ORDERING INFORMATION

BLOCK DIAGRAM

TYPE

NUMBER

PACKAGE

NAME DESCRIPTION VERSION

TDA8702 DIP16 plastic dual in-line package; 16 leads (300 mil); long body SOT38-1
TDA8702T SO16 plastic small outline package; 16 leads; body width 7.5 mm SOT162-1

Fig.1 Block diagram.

handbook, full pagewidth

BAND-GAP

REFERENCE

CURRENT

REFERENCE

LOOP

CURRENT

GENERATORS

CURRENT

SWITCHES

REGISTERS

CLOCK INPUT

INTERFACE

MSA659

DATA

INPUT

INTERFACE

12
11
3
4
10
9
8
7

5

1

2

6

REF

100 nF

DGND
AGND

CLK

(LSB) D0

D1
D2
D3
D4
D5
D6

(MSB) D7

75

Ω

75

Ω

16

15
14

V

CCA

V

OUT

V

OUT

V

CCD

TDA8702/

TDA8702T

13

1996 Aug 23 4

Philips Semiconductors Product specification

8-bit video digital-to-analog converter TDA8702

PINNING

SYMBOL PIN DESCRIPTION

REF 1 voltage reference (decoupling)
AGND 2 analog ground
D2 3 data input; bit 2
D3 4 data input; bit 3
CLK 5 clock input
DGND 6 digital ground
D7 7 data input; bit 7
D6 8 data input; bit 6
D5 9 data input; bit 5
D4 10 data input; bit 4
D1 11 data input; bit 1
D0 12 data input; bit 0
V

CCD

13 positive supply voltage for digital

circuits (+5 V)

V

OUT

14 analog voltage output

V

OUT

15 complementary analog voltage output

V

CCA

16 positive supply voltage for analog

circuits (+5 V)

Fig.2 Pin configuration.

handbook, halfpage

MSA658

1
2
3
4
5
6
7
8

16
15
14
13
12
11
10

9

TDA8702/

TDA8702T

V

CCA

V

OUT

V

OUT

V

CCD

D0
D1
D4
D5

D6

D7

D3

D2

DGND

CLK

AGND

REF

1996 Aug 23 5

Philips Semiconductors Product specification

8-bit video digital-to-analog converter TDA8702

LIMITING VALUES

In accordance with the Absolute Maximum Rating System (IEC 134).

HANDLING

Inputs and outputs are protected against electrostatic discharges in normal handling. However, to be totally safe, it is
desirable to take normal precautions appropriate to handling integrated circuits.

THERMAL RESISTANCE

SYMBOL PARAMETER MIN. MAX. UNIT

V

CCA

analog supply voltage −0.3 +7.0 V

V

CCD

digital supply voltage −0.3 +7.0 V

V

CCA

− V

CCD

supply voltage differential −0.5 +0.5 V
AGND − DGND ground voltage differential −0.1 +0.1 V
V

I

input voltage (pins 3 to 5 and 7 to 12) −0.3 V

CCD

V

I

OUT/IOUT

total output current (pins 14 and 15) −5 +26 mA
T

stg

storage temperature −55 +150 °C
T

amb

operating ambient temperature 0 +70 °C
T

j

junction temperature − +125 °C

SYMBOL PARAMETER VALUE UNIT

R

th j-a

from junction to ambient in free air

SOT38-1 70 K/W
SOT162-1 90 K/W

1996 Aug 23 6

Philips Semiconductors Product specification

8-bit video digital-to-analog converter TDA8702

CHARACTERISTICS

V

CCA=V16

− V2= 4.5 V to 5.5 V; V

CCD=V13

− V6= 4.5 V to 5.5 V; V

CCA

− V

CCD

= −0.5 V to +0.5 V; V

REF

decoupled to

AGND by a 100 nF capacitor; T

amb

=0°C to +70 °C; AGND and DGND shorted together; unless otherwise specified

(typical values measured at V

CCA=VCCD

= 5 V and T

amb

=25°C).

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Supply

V

CCA

analog supply voltage 4.5 5.0 5.5 V

V

CCD

digital supply voltage 4.5 5.0 5.5 V

I

CCA

analog supply current note 1 − 26 32 mA

I

CCD

digital supply current note 1 − 23 30 mA

AGND − DGND ground voltage differential −0.1 − +0.1 V

Inputs

DIGITAL INPUTS (D7 TO D0) AND CLOCK INPUT (CLK)
V

IL

LOW level input voltage 0 − 0.8 V

V

IH

HIGH level input voltage 2.0 − V

CCD

V

I

IL

LOW level input current VI= 0.4 V −−0.3 −0.4 mA

I

IH

HIGH level input current VI= 2.7 V − 0.01 20 µA

f

CLK

maximum clock frequency −−30 MHz

Outputs (note 2; referenced to V

CCA

)

V

OUT

− V

OUT

full-scale analog output voltages
(peak-to-peak value)

ZL=10kΩ−1.45 −1.60 −1.75 V
Z

L

=75Ω−0.72 −0.80 −0.88 V

V

OS

analog offset output voltage code = 0 −−3−25 mV

V

OUT

/TC full-scale analog output voltage

temperature coefficient

−−200 µV/K

V

OS

/TC analog offset output voltage

temperature coefficient

−−20 µV/K

B −3 dB analog bandwidth note 3; f

CLK

= 30 MHz − 150 − MHz

G

diff

differential gain − 0.6 − %

Φ

diff

differential phase − 1 − deg

Z

O

output impedance − 75 −Ω

Transfer function (f

CLK

= 30 MHz)

ILE DC integral linearity error −−±1/2 LSB
DLE DC differential linearity error −−±1/2 LSB